Brother HL-2135W manual 119

Troubleshooting

Examples of poor print	Recommendation
quality
	 If the problem is not solved after printing a few pages, the drum unit may have
	foreign material, such as glue from a label, stuck on the drum. Clean the drum
	unit. (See Cleaning the drum unit on page 87)

94 mm

(3.71 in.)  The drum unit may be damaged. Put in a new drum unit. See Replacing the drum unit on page 79.

94mm

(3.71 in.)

White Spots on black text
and graphics at 94 mm	5
(3.71 in.) intervals

94 mm

(3.71 in.)

94 mm

(3.71 in.)

Black Spots at 94 mm
(3.71 in.) intervals
		 The drum unit may be damaged. Put in a new drum unit. See Replacing the drum
		unit on page 79.
ABCDEFGH		 The toner cartridge may be damaged. Put in a new toner cartridge. See
abcdefghijk
		Replacing the toner cartridge on page 71.
A B C D
		 Make sure that you use paper that meets our specifications. See Acceptable
a b c d e
0 1 2 3 4		paper and other print media on page 3.
		 If you use label sheets for laser printers, the glue from the sheets may sometimes
Black toner marks across the		stick to the OPC drum surface. Clean the drum unit. See Cleaning the drum unit
	page	on page 87.
		 Do not use paper that has clips or staples because they will scratch the surface
		of the drum.
		 If the unpacked drum unit is in direct sunlight or room light, the unit may be
		damaged.
		 Clean the primary corona wire inside the drum unit by sliding the green tab. See
		Cleaning the corona wire on page 85.
	ABCDEFGH	 Make sure the green tab of the primary corona wire is at the home position (a).
	abcdefghijk
	A B C D	 The drum unit may be damaged. Put in a new drum unit. See Replacing the drum
	a b c d e	unit on page 79.
		 The toner cartridge may be damaged. Put in a new toner cartridge. See
0 1 2 3 4
		Replacing the toner cartridge on page 71.
Black lines down the page		 The fuser unit may be contaminated. Call your dealer or Brother Customer
Printed pages have toner stains		Service.
down the page.
		115